:root {
  --bg: #0f0d1a;
  --panel: #191630;
  --panel-raised: #211c3c;
  --line: #342d59;
  --ink: #edeafa;
  --ink-dim: #aaa4ca;
  --violet: #8b5cf6;
  --violet-lit: #c4b5fd;
  --gold: #ffd08a;
  --green: #8de2ad;
  --mono: ui-monospace, "Cascadia Mono", Menlo, Consolas, monospace;
  --sans: system-ui, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.68 var(--sans);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--violet-lit); }
a:hover { color: #ddd3ff; }
a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 3px solid var(--violet-lit);
  outline-offset: 3px;
}
.skip-link {
  position: fixed;
  left: 16px;
  top: -80px;
  z-index: 20;
  padding: 10px 14px;
  border-radius: 8px;
  background: var(--violet);
  color: white;
  font: 700 14px var(--mono);
}
.skip-link:focus { top: 16px; }

.site-bar {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--line);
  background: rgba(15, 13, 26, .94);
  backdrop-filter: blur(12px);
}
.site-bar-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
  min-height: 58px;
  display: flex;
  align-items: center;
  gap: 22px;
}
.wordmark {
  color: var(--ink);
  text-decoration: none;
  font: 800 22px var(--mono);
  letter-spacing: -.04em;
  margin-right: auto;
}
.site-nav { display: flex; gap: 6px; }
.site-nav a {
  color: var(--ink-dim);
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: .08em;
  font: 700 13px var(--mono);
  padding: 9px 12px;
  border-radius: 8px;
}
.site-nav a:hover, .site-nav a[aria-current="page"] {
  color: var(--violet-lit);
  background: rgba(139, 92, 246, .12);
}

.guide-home, .guide-shell {
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
}
.guide-home { padding: 76px 0 90px; }
.guide-kicker {
  color: var(--violet-lit);
  font: 700 12px var(--mono);
  letter-spacing: .22em;
  text-transform: uppercase;
}
.guide-home h1, .guide-hero h1 {
  margin: 8px 0 14px;
  font-family: var(--mono);
  letter-spacing: -.045em;
  line-height: 1.05;
  text-wrap: balance;
}
.guide-home h1 { font-size: clamp(48px, 8vw, 78px); }
.guide-home .lede, .guide-hero .lede {
  max-width: 720px;
  margin: 0;
  color: var(--ink-dim);
  font-size: clamp(18px, 2.5vw, 22px);
  text-wrap: pretty;
}
.guide-count {
  display: inline-flex;
  margin-top: 24px;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 12px;
  color: var(--ink-dim);
  font: 700 12px var(--mono);
}
.guide-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 50px;
}
.guide-card {
  position: relative;
  min-height: 230px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: linear-gradient(145deg, var(--panel-raised), var(--panel));
  color: var(--ink);
  text-decoration: none;
  transition: transform .14s ease, border-color .14s ease;
}
.guide-card:hover {
  transform: translateY(-3px);
  border-color: var(--violet);
  color: var(--ink);
}
.guide-card .number {
  color: var(--violet-lit);
  font: 700 12px var(--mono);
}
.guide-card h2 {
  margin: 25px 0 8px;
  font: 750 clamp(23px, 3vw, 30px)/1.2 var(--mono);
}
.guide-card p { margin: 0; color: var(--ink-dim); max-width: 42ch; }
.guide-card .arrow {
  position: absolute;
  right: 24px;
  top: 22px;
  color: var(--violet-lit);
  font: 700 24px var(--mono);
}

.guide-shell { padding: 52px 0 100px; }
.crumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 34px;
  color: var(--ink-dim);
  font: 13px var(--mono);
}
.crumbs a { text-decoration: none; }
.guide-hero {
  border-bottom: 1px solid var(--line);
  padding-bottom: 38px;
  margin-bottom: 40px;
}
.guide-hero h1 { font-size: clamp(40px, 7vw, 68px); max-width: 18ch; }
.guide-layout {
  display: grid;
  grid-template-columns: 220px minmax(0, 760px);
  gap: 54px;
  align-items: start;
}
.toc {
  position: sticky;
  top: 82px;
  border-left: 1px solid var(--line);
  padding-left: 18px;
}
.toc strong {
  display: block;
  margin-bottom: 9px;
  color: var(--ink);
  font: 700 12px var(--mono);
  letter-spacing: .12em;
  text-transform: uppercase;
}
.toc a {
  display: block;
  padding: 5px 0;
  color: var(--ink-dim);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.35;
}
.toc a:hover { color: var(--violet-lit); }

.guide-article { min-width: 0; }
.guide-article > :first-child { margin-top: 0; }
.guide-article h2, .guide-article h3 { scroll-margin-top: 84px; text-wrap: balance; }
.guide-article h2 {
  margin: 64px 0 16px;
  font: 750 clamp(27px, 4vw, 34px)/1.2 var(--mono);
}
.guide-article h3 {
  margin: 38px 0 12px;
  font: 750 21px/1.3 var(--mono);
  color: var(--violet-lit);
}
.guide-article p { margin: 0 0 18px; }
.guide-article ul, .guide-article ol { margin: 0 0 22px; padding-left: 28px; }
.guide-article li { margin: 7px 0; }
.guide-article li::marker { color: var(--violet-lit); }
.guide-article code {
  border: 1px solid rgba(196, 181, 253, .16);
  border-radius: 5px;
  background: rgba(139, 92, 246, .10);
  color: var(--violet-lit);
  padding: .08em .34em;
  font: .9em var(--mono);
  overflow-wrap: anywhere;
}
.guide-article pre {
  overflow-x: auto;
  margin: 22px 0 28px;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #0a0912;
  line-height: 1.5;
}
.guide-article pre code {
  border: 0;
  padding: 0;
  background: none;
  color: #ddd8ef;
  font-size: 14px;
  overflow-wrap: normal;
}
.callout {
  margin: 24px 0;
  padding: 17px 19px;
  border: 1px solid var(--line);
  border-left: 4px solid var(--violet);
  border-radius: 10px;
  background: var(--panel);
}
.callout.warning { border-left-color: var(--gold); }
.callout strong { color: var(--violet-lit); }
.callout.warning strong { color: var(--gold); }
.callout p:last-child { margin-bottom: 0; }
.steps {
  counter-reset: step;
  list-style: none;
  padding: 0 !important;
}
.steps > li {
  position: relative;
  padding: 4px 0 18px 50px;
  counter-increment: step;
}
.steps > li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0;
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  border: 1px solid var(--violet);
  border-radius: 50%;
  color: var(--violet-lit);
  font: 700 13px var(--mono);
}
.path-table {
  width: 100%;
  border-collapse: collapse;
  margin: 22px 0 30px;
}
.path-table th, .path-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}
.path-table th { color: var(--ink-dim); font: 700 12px var(--mono); text-transform: uppercase; }
.path-table td:first-child { white-space: nowrap; }
.sprite-grid-reference {
  margin: 28px 0 34px;
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  background: #090811;
}
.sprite-grid {
  width: 100%;
  border-collapse: collapse;
  table-layout: fixed;
  font-family: var(--mono);
  text-align: center;
}
.sprite-grid caption {
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  font-size: 14px;
  font-weight: 700;
  text-align: left;
}
.sprite-grid th,
.sprite-grid td {
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 14px 6px;
}
.sprite-grid tr > :last-child { border-right: 0; }
.sprite-grid tbody tr:last-child > * { border-bottom: 0; }
.sprite-grid thead th,
.sprite-grid tbody th {
  background: rgba(139, 92, 246, .10);
  color: var(--ink-dim);
  font-size: 12px;
  line-height: 1.25;
}
.sprite-grid thead th span { display: block; }
.sprite-grid td {
  color: var(--ink);
  font-size: 17px;
  font-weight: 700;
}
.sprite-grid td.is-selected {
  background: rgba(139, 92, 246, .30);
  color: #eee9ff;
  box-shadow: inset 0 0 0 1px var(--violet-lit);
}
.sprite-grid-note {
  margin: 0 !important;
  border-top: 1px solid var(--line);
  padding: 13px 16px;
  background: var(--panel);
  color: var(--ink-dim);
  font-size: 14px;
}
figure {
  margin: 28px 0 34px;
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  background: #090811;
}
figure img, figure video { display: block; width: 100%; height: auto; max-height: 720px; object-fit: contain; }
figure.pixel img { image-rendering: pixelated; }
figcaption {
  border-top: 1px solid var(--line);
  padding: 10px 14px;
  color: var(--ink-dim);
  background: var(--panel);
  font-size: 13px;
}
.next-guide {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-top: 70px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}
.next-guide a { text-decoration: none; font: 700 14px var(--mono); }
@media (max-width: 820px) {
  .guide-grid { grid-template-columns: 1fr; }
  .guide-layout { grid-template-columns: 1fr; gap: 28px; }
  .toc { position: static; border: 1px solid var(--line); border-radius: 12px; padding: 16px 18px; }
  .toc a { display: inline-block; margin-right: 14px; }
}
@media (max-width: 560px) {
  body { font-size: 16px; }
  .site-bar-inner { padding: 0 16px; gap: 10px; }
  .site-nav a { padding: 9px 8px; font-size: 12px; }
  .guide-home, .guide-shell { width: min(100% - 30px, 1180px); }
  .guide-home { padding-top: 48px; }
  .guide-card { min-height: 210px; padding: 22px; }
  .guide-shell { padding-top: 30px; }
  .guide-article pre { margin-left: -6px; margin-right: -6px; padding: 14px; }
  .path-table { display: block; overflow-x: auto; }
  .sprite-grid th,
  .sprite-grid td { padding: 11px 2px; }
  .sprite-grid thead th,
  .sprite-grid tbody th { font-size: 10px; }
  .sprite-grid td { font-size: 15px; }
  .next-guide { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}